This study of 397 children provides qualified support for die work of
Martin and colleagues in that kindergarten measures of negative emotio
nality and activity level were correlated with Grade 1 reading measure
s. The amount of reading achievement variance accounted for by tempera
ment was less than that reported by Martin, however. Our analyses, nev
ertheless, revealed that persistence plays a significant role in accou
nting for reading progress. However, intelligence was found to be a mo
derator variable between persistence and reading achievement. For chil
dren with lower intelligence only, persistence significantly predicted
reading achievement, the correlation being positive. Using growth cur
ve analysis, we also found that persistence measured in kindergarten w
as a significant predictor of the growth rate of reading ability for c
hildren from kindergarten through third grade. The implications of the
se results for school psychological assessment processes, classroom in
struction, and primary prevention are discussed. (C) 1998 Society for
the Study of School Psychology. Published by Elsevier Science Ltd.